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MediumPermutations & combinations
AQuA-RAT train #37445 · Combinatorics · Permutations & combinations

How many four letter combinations can be formed using the letters of…

How many four letter combinations can be formed using the letters of the word HEART?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #37445

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